ICD-10 Code D24.9 – Benign neoplasm of unspecified breast (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D24.9 – Benign neoplasm of unspecified breast
What it is
This code identifies a noncancerous growth in breast tissue when the side and exact breast site are not documented. Use it for a benign neoplasm of the breast that is unspecified.
Clinical signs
Clinical features vary; refer to documentation. Benign breast masses are often described as a palpable lump, localized fullness, or imaging finding without evidence of malignancy.
When to use this code
Use D24.9 when the provider documents a benign breast tumor but does not specify left or right breast, or a more exact breast site. It may also fit when pathology or imaging confirms a benign neoplasm and the record remains nonspecific. Check documentation if laterality is available.
Do not use for
Do not use this code for malignant breast neoplasms, cysts, or inflammatory breast conditions. If the record identifies a specific breast quadrant or laterality, code that more precise diagnosis instead.
Coding tip
Query for laterality and exact site before assigning D24.9, because a more specific breast code is often available.